Synthesis of Ag/ZnO nanorods array with enhanced photocatalytic performance

Ren, Chunlei; Yang, Beifang; Wu, Min; Xu, Jizheng; Fu, Zhengping; Lv, Yan; Guo, Tao; Zhao, Yiming; Zhu, Changqiong

doi:10.1016/j.jhazmat.2010.05.141

Cited by 384 publications

(168 citation statements)

References 29 publications

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“…Two main mechanisms can be responsible for the enhanced photocatalytic property of semiconductor dispersed with metal NPs. On the one hand, the metal NPs can behave as an e  trap to facilitate the CT from semiconductor to metal in such heterojunction system  [15][16][17]. On the other hand, it has also been discovered that surface plasmon resonance (SPR) effect of metal NPs could broaden the absorption of semiconductor to the visible light region, and promote the CT from metal to semiconductor leading to the increased separation efficiency of e  -h + pairs [4,5,18,19].…”

Section: Introductionmentioning

confidence: 99%

Enhanced photocatalytic activity in Ag-nanoparticle-dispersed BaTiO3 composite thin films: Role of charge transfer

Zhang

Huang

et al. 2017

J Adv Ceram

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Abstract:Optical absorption and photocatalytic activity can be enhanced by surface plasmon resonance (SPR) effect, but the charge transfer (CT) mechanism between the dispersed noble metal nanoparticles (NPs) and the semiconductor matrix has been ignored. Herein, we adduce a direct and strong evidence in Ag-nanoparticle-dispersed BaTiO 3 (Ag/BTO) composite films through X-ray photoelectron and photoluminescence spectra which reveals the CT from BTO trapped by Ag NPs under UV light and from Ag NPs to BTO under visible light. Owing to the broadened optical absorption and efficient CT from Ag NPs to BTO, the Ag 25 /BTO film manifests the optimal photocatalytic activity under the irradiation of visible light rather than UV-Vis light. Our work provides a helpful insight to design highly efficient plasmonic photocatalyst through considering the synergetic effect of the CT between metal and semiconductor on the enhanced photocatalytic activity.

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Section: Introductionmentioning

confidence: 99%

Enhanced photocatalytic activity in Ag-nanoparticle-dispersed BaTiO3 composite thin films: Role of charge transfer

Zhang

Huang

et al. 2017

J Adv Ceram

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“…One of the methods to increase the efficiency of the photocatalytic activity is to develop heterogeneous metal/semiconductor nanocomposite materials [18][19][20]. Ag-ZnO nanocomposites boost great research interest due to their high photocatalytic performance [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35]. For example, Zhang et Page 6 of 36 A c c e p t e d M a n u s c r i p t 6 al.…”

Section: Introductionmentioning

confidence: 99%

One-pot facile synthesis of branched Ag-ZnO heterojunction nanostructure as highly efficient photocatalytic catalyst

Huang

Zhang

Yuán

et al. 2015

Applied Surface Science

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“…Incorporation of silver in zinc oxide caused comparatively smaller decrease in band gap energy relative to such incorporation of nitrogen. It may be because doped silver simply adheres at the surface of zinc oxide and therefore does not modify the band gap energy of zinc oxide [23]. Silver traps the electrons at the conduction band and prevents electro-hole recombination [24].…”

Section: Uv/vis Diffuse Absorption Spectramentioning

confidence: 99%

Synthesis, characterization and photocatalytic activities of Ag-N-codoped ZnO nanoparticles for degradation of methyl red

Welderfael¹,

Yadav²,

Taddesse³

et al. 2013

Bull. Chem. Soc. Eth.

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ABSTRACT. Ag-N-codoped zinc oxide nanoparticles were synthesized by a one-step impregnation of Ag in N-doped ZnO nanoparticles. The morphologies and structures of the as-synthesized nanomaterials were investigated by using X-ray diffraction (XRD), transmission electron microscopy (TEM), and UV-Vis spectrophotometric techniques. Photocatalytic degradation of methyl red dye using synthesized photocatalysts was studied under solar as well as UV irradiations. Modified zinc oxide photocatalysts showed higher photocatalytic activity compared to pure zinc oxide both under solar as well as UV irradiations. Calcined zinc oxide shows better photocatalytic activity than commercial zinc oxide under both solar and UV irradiations. Highest catalytic activity of Ag-N co-doped zinc oxide (ANZ) among the undoped, Ag-doped and N-doped photocatalysts was attributed to the lower rate of recombination of the photogenerated electrons and holes as well as its lower band gap energy. Photocatalytic degradation of methyl red dye follows pseudo first order kinetics for all the nanoparticles so-obtained.

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Synthesis of Ag/ZnO nanorods array with enhanced photocatalytic performance

Cited by 384 publications

References 29 publications

Enhanced photocatalytic activity in Ag-nanoparticle-dispersed BaTiO3 composite thin films: Role of charge transfer

Enhanced photocatalytic activity in Ag-nanoparticle-dispersed BaTiO3 composite thin films: Role of charge transfer

One-pot facile synthesis of branched Ag-ZnO heterojunction nanostructure as highly efficient photocatalytic catalyst

Synthesis, characterization and photocatalytic activities of Ag-N-codoped ZnO nanoparticles for degradation of methyl red

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